Product design and development are intricate processes that demand careful integration of various components to attain the desired functional output. To enhance the efficiency and effectiveness of this process, this study explores the strategies of part consolidation (PC) and functional integration (FI). PC involves the reduction of individual components by combining multiple functions into a single component. In the context of Additive Manufacturing (AM), these strategies have immense potential and enables the production of complex and customized products at a lower cost and greater efficiency. This paper presents a novel methodology for optimizing the functional integration and part consolidation of AM products using a Design Structure Matrix (DSM) and weighted degree centrality score (WDCS). Specifically, the composite DSM (CDSM), an advanced variation of the traditional DSM, was employed to identify potential candidates for PC and FI. CDSM captures both hierarchical and non-hierarchical relationships between components in a system or project, making it a valuable tool for enhancing the design and manufacturability of AM products. This study contributes to the growing body of knowledge in product design and development, particularly in the context of AM, by offering a structured approach to harness the benefits of functional integration and part consolidation.